The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 01, 2011
Filed:
Apr. 02, 2009
Applicants:
Timo Gerlach, Hannover, DE;
Mike Heurich, Apelern, DE;
Tino Wiggers, Seelze, DE;
Inventors:
Assignee:
WABCO GmbH, Hannover, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B 7/14 (2006.01); G01B 7/30 (2006.01);
U.S. Cl.
CPC ...
Abstract
A position measuring apparatus includes (a) a sleeve that has an open first end and a second end opposite the first end, (b) a guide pin guided at least partly in the sleeve, (c) a spring, (d) a linear magnetic field sensor and (e) a magnet disposed adjacent to the linear magnetic field sensor. To avoid wear even in the presence of large temperature fluctuations, the magnet is disposed on a face of the guide pin facing the second end of the sleeve, and the spring is disposed between the second end of the sleeve and the magnet such that the spring urges the magnet against the guide pin.